OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application
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/*
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* edma_test.c+ m+ S _: w! { V A3 a8 r" L
*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.
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*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT; R7 X: K$ I1 z y* E, x) p P
* TO CHANGE.* R. N5 Z) r0 O+ d* W% j
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/3 m) c6 a* Y' I% u- _! [
*- E: A4 A5 E+ W
* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as: u: g! c1 g8 a& q: N: @9 M- \0 s
* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty* j% u2 g1 `1 S) @6 O
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the0 V& S9 `: { B- q
* GNU General Public License for more details.2 u+ ?- J# R7 X# X! V3 a
*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>% L$ H; h& l" x7 T) h# w
#include <asm/io.h>
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#include <linux/moduleparam.h>4 J( W" g% V) L B3 x1 S
#include <linux/sysctl.h>
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#include <linux/mm.h>- }/ _% W a" Q: u) s; t
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>. K( v9 j* S8 [, ]
#include <asm/hardware/edma.h>& }7 {" N# O% w7 l' L
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#undef EDMA3_DEBUG& x0 L4 O$ r( b. F
/*#define EDMA3_DEBUG*/3 p9 i4 u4 Z5 [+ l: r! v2 j
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#ifdef EDMA3_DEBUG* ~% M# \! S* w& b! Z
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)$ ]4 F# l) h+ P) ^: Z
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)7 A, b! a0 x9 e; j
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)) t8 A# p. m z- I
#else3 Q' O6 Q0 |& B( h2 J& b
#define DMA_PRINTK( x... ), t9 g9 ^4 d8 n* \ ~
#define DMA_FN_IN
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#define DMA_FN_OUT- A. m; m& }' B) F F" v2 i4 E
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;7 y S8 h/ i/ A# a; }' v
static volatile int irqraised2 = 0;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);! f! \7 o' Z" f- o
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); f, Z$ ~; j( e- U' K* ~8 g" T
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dma_addr_t dmaphyssrc1 = 0;* p" v. ^& e1 v; u7 v
dma_addr_t dmaphyssrc2 = 0;. K7 K0 F' f0 I/ P
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;( y; F" d0 @$ w4 Q2 A6 f
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;1 [" t4 D$ A6 s/ E- e' a9 ]. O
char *dmabufdest1 = NULL;; K2 c! J1 Y9 ~+ z
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8; S' ^" L, S: o7 f* W1 i, R
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module_param(acnt, int, S_IRUGO);, w5 V8 C) r! v' `+ d$ `
module_param(bcnt, int, S_IRUGO);
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module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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[未解决] OMAPL138如何在Linux下使用EDMA3驱动